The Pirelli's have been coming on M3's for a few years and are much better option than the Conti's. You should be happy with anything other than Conti's.

I hated the Contis on my wife's old 325i. We even swapped them up to the top of the line Contis and they were quite possibly the worst tires I've ever owned-even worse than the Falken tires I had on my old Integra.